The WebObjects 4.5 and 4.5.1 LDAPAdaptor example source code in $NEXT_ROOT/Developer/Examples/EnterpriseObjects/Sources/LDAPAdaptor fails to fetch attibutes (the LDAP vernacular for a column in a table) optimally because it fails to get a copy of a pointer before doing a destructive copy.
In the LDAPAdaptor example, when the -attributesToFetch method returns a non-nil value, then the LDAPAdaptor will fetch only those attributes in the NSArray returned by -attributesToFetch. If -attributesToFetch returns nil, then the LDAPAdaptor will fetch all attributes, for example, all columns in the LDAP "table".
The source code solution below allows only needed attributes to get fetched from the server. It is not a mandatory modification, merely an optimization. The solution below should improve responsiveness for users with slow connections to LDAP Servers, for LDAP servers with several unneeded or unused attributes, and for users attempting to modify directory attributes with multiple values.
Refer to the - (char **) cStringArray method of LDAPPrivate.m (lines 49-63). Replace the existing implementation of cStringArray with the following one:
- (char **)cStringArray
{
char **result, **start;
int i, len = [self count];
result = (char **)malloc( (len * sizeof(char *)) + 1 );
start = result; // hold on to original starting place.
for (i = 0 ; i < len; i++)
{
*result = cStringCopy([self objectAtIndex:i]);
result++;
}
*result = NULL; // terminate list.
return start; // the distribution returns 'result,' e.g,
// the null at the end of the array.
}
After making this source code change, be sure to recompile the adaptor to incorporate the modifications.